| Acronym | Definition |
|---|
| CIEM | Custom In-Ear Monitor (headphones; various companies) |
| CIEM | Conseil International pour l’ Exploration de La Mer (French: International Council for the Exploration of the Sea, aka: ICES) |
| CIEM | Centro de Investigaciones de la Economia Mundial |
| CIEM | Central Institute of Economic Management (Vietnam) |
| CIEM | Centre Intégré d'Évaluation des Menaces (Fench: Integrated Threat Assessment Center; Canada) |
| CIEM | Centro Ibérico de Estudios Masónicos (Madrid, Spain) |
| CIEM | Circle of Industrial Engineering Majors (University of the Philippines) |
| CIEM | Calcutta Institute of Engineering and Management (India) |